当前位置: X-MOL 学术Nat. Energy › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Assessing the feasibility of carbon dioxide mitigation options in terms of energy usage
Nature Energy ( IF 49.7 ) Pub Date : 2020-07-06 , DOI: 10.1038/s41560-020-0646-1
Oytun Babacan , Sven De Causmaecker , Ajay Gambhir , Mathilde Fajardy , A. William Rutherford , Andrea Fantuzzi , Jenny Nelson

Measures to mitigate the emissions of carbon dioxide (CO2) can vary substantially in terms of the energy required. Some proposed CO2 mitigation options involve energy-intensive processes that compromise their viability as routes to mitigation, especially if deployed at a global scale. Here we provide an assessment of different mitigation options in terms of their energy usage. We assess the relative effectiveness of several CO2 mitigation routes by calculating the energy cost of carbon abatement (kilowatt-hour spent per kilogram CO2-equivalent, or kWh kgCO2e–1) mitigated. We consider energy efficiency measures, decarbonizing electricity, heat, chemicals and fuels, and also capturing CO2 from air. Among the routes considered, switching to renewable energy technologies (0.05–0.53 kWh kgCO2e–1 mitigated) offer more energy-effective mitigation than carbon embedding or carbon removal approaches, which are more energy intensive (0.99–10.03 kWh kgCO2e–1 and 0.78–2.93 kWh kgCO2e–1 mitigated, respectively), whereas energy efficiency measures, such as improving building lighting, can offer the most energy-effective mitigation.



中文翻译:

根据能源使用量评估二氧化碳减排方案的可行性

减少二氧化碳(CO 2)排放的措施在所需能量方面可能有很大不同。某些拟议的CO 2减排方案涉及能源密集型过程,这些过程会削弱其作为减排途径的生存能力,尤其是在全球范围内部署时。在这里,我们根据能源使用情况评估了不同的缓解方案。我们通过计算碳减排的能源成本(每千克CO 2当量或千瓦时kgCO 2 e –1所花费的千瓦小时,来评估几种减少CO 2途径的相对有效性。)缓解。我们考虑采取节能措施,对电,热,化学物质和燃料进行除碳,并从空气中捕获CO 2。在考虑的路线中,转用可再生能源技术(减少0.05–0.53 kWh kgCO 2 e –1)比碳包埋或除碳方法更加节能,而碳包埋或碳清除方法耗能更大(0.99–10.03 kWh kgCO 2 e –1)。 1和0.78–2.93 kWh kgCO 2 e –1分别降低),而能源效率措施(如改善建筑照明)可以提供最节能的缓解措施。

更新日期:2020-07-06
down
wechat
bug